関連ワード:  what do you mean by road transportation    what do you mean by land transport    what do you mean by land transport answer    what do you mean by land transport class 1    what do you mean by land transport class 2    what do you mean by land transport give example    what do you mean by land transport class 3    what do you mean by land transport in hindi    what do you understand by land transport    what do you mean by car travel